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Cannot Find Bounds Of Current Function In Gdb

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The result is that the code "returns" to some unpredictable location and can't figure out where it is it returned to. Compiling with '-fno-stack-protector' only means not to set a canary value; but this isn't enough. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. I quit my> debugging> session and started up again. this contact form

The code generated by the compiler may include safeguards against accepting the buffer overflow itself. So inser[-1] will always be evaluated after the last inner loop iteration because j has been decremented from 0 to -1 by j-- before the final loop test where j>=0 will This makes it much harder for the attacker to guess what will be the value he wants to store (through a buffer overflow) over the "return address" slot. Why did Borden do that to his wife in The Prestige?

Cannot Find Bounds Of Current Function In Gdb

Maybe something is wrong in my computer.the project dependencies is really good . Why do the cars die after removing jumper cables Is Area of a circle always irrational What security operations provide confidentiality, integrity and authentication? All rights reserved.

This windows appeared: http://postimg.org/image/uaf7fnfbf/ Can anyone help me with this problem?

  • Why is looping over find's output bad practice?
  • Browse other questions tagged buffer-overflow c or ask your own question.
  • Code: [Select]C:\lazarus\lazarus.exe --debug-log=C:\mylazlog.txt --debug-enable=DBG_CMD_ECHO,DBG_STATE,DBG_DATA_MONITORS,DBGMI_QUEUE_DEBUG,DBGMI_TYPE_INFO
    Logged KMagic Full Member Posts: 100 Re: Cannot find bounds of current function error « Reply #13 on: January 30, 2014, 09:34:20 pm » Finally, I
  • I am inside myfunction which has been called by main.And i changed the ret address of myfunction with an address at the stack where the nops are and the shellcode.I am
  • huzhongshan Multiple posting newcomer Posts: 109 Re: Cannot find bounds of current function? « Reply #7 on: March 25, 2013, 11:03:49 am » confused , is it caused by os?
  • Posts: 7070 Re: Cannot find bounds of current function? « Reply #8 on: March 25, 2013, 11:15:38 am » Also tested on Win7 Pro all updates with C::B 12.11.No such issue.I
  • Why did Borden do that to his wife in The Prestige?

Switching from stabs to dwarf or vice versa might solveyour problem.Jonas _______________________________________________ Do not post admin requests to the list. When you do that you might realize that your loops will step out of bounds. –Some programmer dude Apr 3 '14 at 13:20 5 i<=16384 --> i<16384 –BLUEPIXY Apr 3 What should I do next? Gdb Print Stack Can this be caused because I'm using a 32-bit mingw on a 64-bit machine?

It will have trouble doing things that require more complicated interpretation: It cannot figure out where stack frames are, it cannot find local variables by name, and so on. Cannot Find Bounds Of Current Function Code Blocks To do that, gdb must use some extra information, such as: symbol tables, which tell where each function begins in the executable file, and possibly their size; debug information (added by If you want to do this for educational purposes, I suggest installing a VM like virtualbox, and an old distro on it. http://stackoverflow.com/questions/22838955/cannot-find-bounds-of-current-function It overwrites the current stack frame of your function with irrelevant data, and destroys the return address in the process, which is normally stored there among other things.

When debugging a program which uses an externl ddl I allways get the error "Cannot find bounds of current function" for the fist call to the library. Gdb Set Breakpoint Not the answer you're looking for? I suppose another alternative would be to produce a fake kernel module or debug info file to give to gdb, to cause it to believe this area is within the program Your segmentation fault is quite another matter.

Cannot Find Bounds Of Current Function Code Blocks

Logged Martin_fr Administrator Hero Member Posts: 4054 Re: Cannot find bounds of current function error « Reply #14 on: January 30, 2014, 09:46:30 pm » Zip it and upload it here.Or http://security.stackexchange.com/questions/10404/why-do-i-get-cannot-find-bound-of-current-function-when-i-overwrite-the-ret-ad This is what causes the error message. -- Best regards, Andrey Tarasevich Yep.Thats was the problem.Thanks for your help Andrey. Cannot Find Bounds Of Current Function In Gdb share|improve this answer answered Jan 6 '12 at 17:20 Tom Leek 128k16244375 1 +1 pretty good, I think its the nx bit because it crashes when he hits the nop Gdb Single Step Assembly I think this bug can be closed. - Tommi Höynälänmaa - Comment 3 dje 2015-05-13 19:44:24 UTC Closing per suggestion.

by WickedDum [Today at 07:51:50 pm] [SOLVED-again] Centering ... weblink How to react? How to react? Also when I execute it I got a segmentation fault and I have compile it with -g -fno-stack-protector. Gdb Disassemble

But the instruction pointer is on the stack, it's not covered by any debug info. Recent versions of gcc will generate some extra hidden code which verifies whether a buffer overflow occurred before doing the fateful ret. Logged huzhongshan Multiple posting newcomer Posts: 109 Re: Cannot find bounds of current function? « Reply #10 on: March 31, 2013, 11:58:45 am » I solved the problem.I reinstalled the windows. navigate here Do Morpheus and his crew kill potential Ones?

up vote 3 down vote favorite 1 I want to exploit a stack based buffer overflow for education purposes.There is a typical function called with a parameter from main which is Gdb Cheat Sheet Should I allow my child to make an alternate meal if they do not like anything served at mealtime? What happened to FN-1824?

Enter layout asm to make the upper window display assembly -- this will automatically follow your instruction pointer, although you can also change frames or scroll around while debugging.

Give commands -gdb-set auto-solib-add 1 -gdb-set stop-on-solib-events 1 -break-insert -t main -exec-run -exec-next 1 -exec-next 1 Actual Results: GDB gives error "Cannot find bounds of current function" and it is unable Join them; it only takes a minute: Sign up Why I do get “Cannot find bound of current function” when I overwrite the ret address of a vulnerable program? copy multiple file in dired to clip and paste each one in a new line When does “haben” push “nicht” to the end of the sentence? Gdb Commands Just learned this method from you.

This requires looking up the return address in the debugger’s knowledge about where the functions are. Or press C-x C-a after entering gdb. SMF 2.0.12 | SMF © 2016, Simple Machines XHTML RSS WAP2 418,779 Members | 1,949 Online Join Now login Ask Question Home Questions Articles Browse Topics Latest Top Members his comment is here Back to the top Apple Store Mac iPod iPhone iPad iTunes Support Search Re: Resolving 'Cannot find bounds of current function' error [Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re:

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